On a hostgator account you can create an online store with Oscommerce script. Oscommerce is PHP (web programming language) script that uses MySQL (database system) as a storage engine, free and licensed under GNU GPL license which gives you much freedom. It offers many features to merchants including many gateways for payments, unlimited products that may be categorized in unlimited categories, international languages, many purchase options and more. It is one of the oldest shopping cart software. The new version 3 will include many options including a new object-oriented design of core code. There are several forks based of Oscommerce most popular one is Zencart.
On our test on Hostgator OScommerce run without any problems, and we have tested most of the features without any problems. Fast and easy installation can be done via Fantastico de luxe cpanel tool. SSL options are available also on Hostgator for your ecommerce site.